Question 1

Find z when the area to the left of z is .6700

Accepted Answer

The answer of Find z when the area to the...

Question 2

While conducting experiments, a marine biologist selects water depths from a uniformly distributed collection that vary between 2.00 m and 7.00 m.
-What is the probability that a randomly selected depth is within 1 standard deviation of the mean?

Accepted Answer

The answer of While conducting experiments, a marine biologist selects...

Question 3

The yearly number of dental claims for the employees of the local shoe manufacturing company is normally distributed with a mean of 105 and a standard deviation of 35.What is the yearly number at which 35% of the employees fall at or below?

Accepted Answer

The answer of The yearly number of dental claims for...

Question 4

Find z when the area between 0 and z is .4750

Accepted Answer

The answer of Find z when the area between 0...

Question 5

The price of an energy sports drink is normally distributed with an average of $2.25 and a standard deviation of $0.15 across store outlets.
-What is the probability that a randomly selected drink will cost more than $2.50?

Accepted Answer

The answer of The price of an energy sports drink...

Question 6

While conducting experiments, a marine biologist selects water depths from a uniformly distributed collection that vary between 2.00 m and 7.00 m.
-What is the standard deviation of the water depth?

Accepted Answer

The answer of While conducting experiments, a marine biologist selects...

Question 7

A paint sprayer coats a metal surface with a layer of paint between 0.43 and 1.23 millimeters thick. The thickness of the coat of paint is approximately uniformly distributed.
-What is the probability that paint from this sprayer on any given metal surface will be between 0.75 and 1.05 millimeters thick?

Accepted Answer

The answer of A paint sprayer coats a metal surface...

Question 8

A plant manager knows that the number of boxes of supplies received weekly is normally distributed with a mean of 200 and a standard deviation of 20. What percentage of the time will the number of boxes received weekly be
-Greater than 210 or Less than 180

Accepted Answer

The answer of A plant manager knows that the number...

Question 9

The price of an energy sports drink is normally distributed with an average of $2.25 and a standard deviation of $0.15 across store outlets.
-What is the probability that a randomly selected drink will cost between $2.00 and $3.00?

Accepted Answer

The answer of The price of an energy sports drink...

Question 10

Find z when the area to the left of z is .05

Accepted Answer

The answer of Find z when the area to the...

Question 11

A paint sprayer coats a metal surface with a layer of paint between 0.43 and 1.23 millimeters thick. The thickness of the coat of paint is approximately uniformly distributed.
-What are the mean and standard deviation of the thickness of the coat of paint on the metal surface?

Accepted Answer

The answer of A paint sprayer coats a metal surface...

Question 12

Find z when the area to the right of z is .1314

Accepted Answer

The answer of Find z when the area to the...

Question 13

While conducting experiments, a marine biologist selects water depths from a uniformly distributed collection that vary between 2.00 m and 7.00 m.
-What is the expected value of the water depth?

Accepted Answer

The answer of While conducting experiments, a marine biologist selects...

Question 14

The price of an energy sports drink is normally distributed with an average of $2.25 and a standard deviation of $0.15 across store outlets.
-What is the probability that a randomly selected drink will cost between $2.00 and $2.50?

Accepted Answer

The answer of The price of an energy sports drink...

Question 15

The price of an energy sports drink is normally distributed with an average of $2.25 and a standard deviation of $0.15 across store outlets.
-What price will 77% of the drink prices fall above?

Accepted Answer

The answer of The price of an energy sports drink...

Question 16

A plant manager knows that the number of boxes of supplies received weekly is normally distributed with a mean of 200 and a standard deviation of 20. What percentage of the time will the number of boxes received weekly be
-Less than 160

Accepted Answer

The answer of A plant manager knows that the number...

Question 17

A plant manager knows that the number of boxes of supplies received weekly is normally distributed with a mean of 200 and a standard deviation of 20. What percentage of the time will the number of boxes received weekly be
-Between 180 and 210

Accepted Answer

The answer of A plant manager knows that the number...

Question 18

A plant manager knows that the number of boxes of supplies received weekly is normally distributed with a mean of 200 and a standard deviation of 20. What percentage of the time will the number of boxes received weekly be
-Greater than 200

Accepted Answer

The answer of A plant manager knows that the number...

Question 19

Between what two values (in dollars)symmetrically distributed around the population mean will 80% of the drink prices fall?

Accepted Answer

The answer of Between what two values (in dollars)symmetrically distributed...

Question 20

Find z when the area between z and -z is .9030

Accepted Answer

The answer of Find z when the area between z...

Quiz 5: Continuous Random Variables

Find z when the area to the left of z is .6700

While conducting experiments, a marine biologist selects water depths from a uniformly distributed collection that vary between 2.00 m and 7.00 m. -What is the probability that a randomly selected depth is within 1 standard deviation of the mean?

The yearly number of dental claims for the employees of the local shoe manufacturing company is normally distributed with a mean of 105 and a standard deviation of 35.What is the yearly number at which 35% of the employees fall at or below?

Find z when the area between 0 and z is .4750

The price of an energy sports drink is normally distributed with an average of $2.25 and a standard deviation of $0.15 across store outlets. -What is the probability that a randomly selected drink will cost more than $2.50?

While conducting experiments, a marine biologist selects water depths from a uniformly distributed collection that vary between 2.00 m and 7.00 m. -What is the standard deviation of the water depth?

A plant manager knows that the number of boxes of supplies received weekly is normally distributed with a mean of 200 and a standard deviation of 20. What percentage of the time will the number of boxes received weekly be -Greater than 210 or Less than 180

The price of an energy sports drink is normally distributed with an average of $2.25 and a standard deviation of $0.15 across store outlets. -What is the probability that a randomly selected drink will cost between $2.00 and $3.00?

Find z when the area to the left of z is .05

A paint sprayer coats a metal surface with a layer of paint between 0.43 and 1.23 millimeters thick. The thickness of the coat of paint is approximately uniformly distributed. -What are the mean and standard deviation of the thickness of the coat of paint on the metal surface?

Find z when the area to the right of z is .1314

While conducting experiments, a marine biologist selects water depths from a uniformly distributed collection that vary between 2.00 m and 7.00 m. -What is the expected value of the water depth?

The price of an energy sports drink is normally distributed with an average of $2.25 and a standard deviation of $0.15 across store outlets. -What is the probability that a randomly selected drink will cost between $2.00 and $2.50?

The price of an energy sports drink is normally distributed with an average of $2.25 and a standard deviation of $0.15 across store outlets. -What price will 77% of the drink prices fall above?

A plant manager knows that the number of boxes of supplies received weekly is normally distributed with a mean of 200 and a standard deviation of 20. What percentage of the time will the number of boxes received weekly be -Less than 160

A plant manager knows that the number of boxes of supplies received weekly is normally distributed with a mean of 200 and a standard deviation of 20. What percentage of the time will the number of boxes received weekly be -Between 180 and 210

A plant manager knows that the number of boxes of supplies received weekly is normally distributed with a mean of 200 and a standard deviation of 20. What percentage of the time will the number of boxes received weekly be -Greater than 200

Between what two values (in dollars)symmetrically distributed around the population mean will 80% of the drink prices fall?

Find z when the area between z and -z is .9030